Trematodes Flashcards

1
Q

Infective stage: cercariae

Dx stage: eggs in feces

A

S. Japonicum

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2
Q

Circumoval precipitin test

Ovoid egg with small hook

A

S. Japonicum

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3
Q

Swimmer’s itch

Katayama fever

A

S. Japonicum

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4
Q

Endemic areas of s. Japonicum

A
Except misamis oriental all of mindanao
Sorsogon
Samar leyte
Oriental mindoro
Bohol
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5
Q

Ttt of trematodes

A

Praziquantel

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6
Q

Resembles TB

Ring shadow opacity on cxr

A

Paragonimiasis

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7
Q

Infective stage: metacercariae
Dx stage: unembryonated egg
Dx: 3% naOh prep

A

Paragonimus westermani

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8
Q

Intermediate host
Snail
Mountain crab

A

Paragonimus westermani

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9
Q

Trematode that can cause chronic biliary dse

A

Clonorchis sinensis

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10
Q

Dx: potassium permanganate stain

Melon like ridges

A

Clonorchis sinensis

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11
Q

Transmission: raw fish
Infective st: metacercariae
Dx stage; embryonated egg

A

Clonorchis sinensis

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12
Q

Cholangiocarcinoma due to clonorchis

A

Klatskin’s tumor

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13
Q

Obstructive jaundice and painful pharyngitis

A

Halzoun

Fasciola hepatica

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14
Q

Sheep liver fluke

Transmitted by eating watercress

A

Fasciola hepatica

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15
Q

Intestinal fluke

Mimics peptic ulcer dse

A

Heterophyes heterophyes

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16
Q

Schistosoma with terminal spine

A

S. Haematobium

17
Q

Schistosoma with lateral spine

A

S. Mansoni

18
Q

Schistosoma with barely visible spine

A

S. Japonicum

19
Q

Intermediate host: oncomelania quadrasi

A

S. Japonicum